I built this one real quick just to get the job done.
The HF pos bent on the first ball joint.
I have a sketch of how I will build the "good" one.
Basically telescoping sides. 1.5" X .25 wall inside 2" X .25 wall outer with through holes for bolts to set the over all length.
2.5" X 2" I beam top and bottom. captured top to hold the jack in place while you load the cups on the ball joint. EZ